INA16 - Welcome to Athens

The INA16 conference is taking place in Athens and to celebrate we are launching a significant addition to Nannotax. We have added a large set of descritptive terms to the database and you can use them to search for taxa by morphological characters and to help identify unknown species. Take a look at Advanced Search (also on the Tools Menu) or the page on Tagging, (also on the About Nannotax menu). (jeremy.young@ucl.ac.uk).

Citation: Prediscosphaeraceae Rood et al., 1971Rank: FamilyType species: Prediscosphaera Vekshina, 1959.Synonyms: Deflandriaceae Black 1968. Deflandrius is a junior synonym of Prediscosphaera hence the name Prediscosphaeraecea is used. In some online databases it is suggested that the family Deflandriaceae is a senior synonym of the Papposphaeraceae. This is based on the suggestion of Norris (1983) that the extant genus Papposphaera resembles fossil Prediscosphaera - however the similarities are superficial and the two groups have quite different rim structures and are most unlikely to be directly related (Jordan & Young 1990).

Geological Range: Notes: Common components of Upper Cretaceous assemblages.Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this databaseFirst occurrence (base): within Aptian Stage (112.95-126.30Ma, base in Aptian stage). Data source: Total of range of species in this database